Thomas e



(No Model.)

T. R. PERRALL.

ANTI FRIGTIONAL BEARING.

PatQntedJune 30, 1885.

INVENTDR.

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STATES i nTnNT Ormes.

THOMAS It. FERRALL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE BAGNALL St LOUD BLOCK COMPANY.

ANTI-FRCTIONAL BEARING.

SPECIFICATION forming part of Letters Patent No. 321,350, dated June 30, 1885.

Application filed May 22, 1855.

T0 all whom may concern.-

Be it known that I, Tnoirns It. FERRALL, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Anti-Frictional Bearings, and I do hereby declare that the same are fully described in the following speciiication and illustrated in the accompanying drawings.

This invention relates to improvements in anti-frictional bearings; and it is carried out as follows, reference being had to the accom panying drawings, Wherem Figure l represents an end view of my im proved bearing, and Fig. 2 represents a central longitudinal section of the same. Fig. 3 represents a central longitudinal section of the improved bearing, in which the lugs or radial projections on the regulator are dispensed with, and Fi g. e represents an end view of the mcdilieation shown in Fig. 3. Fig. 5 represents a perspective view ofthe regulator used in the bearing shown in Figs. l and 2, and Fig. 6 represents a perspective view of the regulator used in the bearing shown in Figs. 3 and Ll.

Similar letters refer to similar parts Wherever they occur on the different parts of the drawings.

Heretofore anti frictional bearings have been made With a pair of regulators for each set of rollers-that is, one regulator at one end of the rollers and another one at the opposite end of said rollers. This has been found objectionable, as the rollers are apt to bind on the said end regulators if one of them advances a little ahead of the other. present invention I have so constructed the improved anti-frictional bearings as to dispense with one of the regulators, and use only one at one end ofthe rollers, such regulator being made with or without radial lugs or projections, as Will be further shown and described.

Referring to Figs. l, 2, and 5, a is the shell, having in one end the centrally-perforated flange or Wall a', serving to confine the antifrietional rollers b b b in their proper positions Within the shell a.

In my- (No model.)

c is the single regulator, having cylindrical side projections, c c c', fitting into correspending central cylindrical holes or recesses in the rollers b b b. In addition to its side project-ions c', the regulator e has a number of outwardly-proj ecting radial lugs c" c. (Shown in Figs. I, 2, and 5.)

At the opposite end from Where the Wall or ilange a is located the shell a is provided with an annular interior groove, a, adapted to receive the expansive split spring-ring d, (shown in Figs. l and 2,) Which, when put in place, as shown in said figures, serves as a stop to prevent the regulator c from dropping out of the shell a on account of the radial lugs c c, which are arranged between a pair of successive rollers Z) b, passing by the inside of the stop-ring d, as shown in Figs. 1 and 2.

As an equivalent for the detachable split ring d, an annular ring or ilange may be used, screwed, riveted, or otherwise secured to one en d of the shell a.

It Will thus be seen that in this my invention I use only one single regulator, o, arranged at one end of the anti-frictional rollers b b, such single regulator having side projections, c c', on which the said rollers are loosely j ournaled, thus insuring a perfect action of said rollers Without any danger or liability of binding, as would be the case Where two end regulators are in use, such result being accomplished by having one end of the shell a partially closed by the annular iiange or Wall a', preventing the rollers from going too far in that direction, the single regulator' c being prevented from moving too far in the opposite direction by the radial lugs c" c and the ring or flange d, as described; and I am thus enabled to provide a practical anti-frictional bearing for sheaves, pulleys, shaftings, or other purposes with the least number of parts possible to effect the desired result.

But the same advantage may be obtained with a single regulator at the one end of the rollers, and at the same time to dispense with the radial lugs c" c", and this arrangement is fully shown in Figs. 3, l, and 6. In Figs. 3 and 4t, A is the shell, partially closed in one end by means of the annular ange or Wall A',

such Wall having on its interior portion an annular recess, A3, for the reception of the single regulator C, which is Void of radial lugs and only provided with cylindrical side projections, C C', on which the anti-frictional rollers B B are journaled in the same manner as de scribed relative to Figs. 1 and 2. The opposite end of shell A is open and provided with an interior annular groove, A, in which is laid the expansive split spring-ring D, to prevent the rollers and single regulator from dropping out of the shell A. In this case also the split ring D may be substituted for an annular flange, secured in a suitable manner to the open end of shell A, if so desired.

Thus it Will be seen that in both instances the same essential feature is carried out-namely, that only one regulator is used and arranged at one end of the rollers, with the shell partially closed in one end by means of an annular flange, and having secured to its opposite open end a split ring or detachable flange.

Having thus fully described the nature, construction, and operation of Iny invention, I wish to secure by Letters Patent, and claim- 1. In an anti-frictional bearing, the shell a, open in one end and having annular ange a in the other, a single regulator, c, located at one end of the anti-frictional rollers b b, with side projections, c c', on which the said rollers are journaled, and having radial lugs c c, combined with ring or flange d, as herein set forth.

2. In an anti-frictional bearing, the shell A, open in one end and having annular recessed flange A A3 in the other, a single regulator, C, located at one end of the anti-frictional rollers B B, and having side projections, C C', on which said rollers are j ournaled, combined With ring or ilange D, as herein set forth.

3. An anti-frictional bearing having a series of rollers and one single regulator, on which said rollers are journaled, as set forth.

In testimony whereof I have atxed my signature in presence of two Witnesses.

THOMAS R. FERRALL. 

